JP6205293B2 - cap - Google Patents

Description

  The present invention relates to a cap.

Conventionally, for example, as shown in Patent Document 1 below, there is a valve seat member in which a communication hole communicating with the inside of a container body is formed, and a valve body that is arranged on the opening peripheral edge of the communication hole and opens and closes the communication hole. A cap comprising a valve member is known.
In this cap, since the valve body is disposed on the peripheral edge of the opening of the communication hole in the valve seat member, the movement of the valve body toward the outside of the container body with respect to the communication hole is allowed, while the inner side of the container body Movement toward is suppressed and functions as a check valve.

JP 2013-133116 A

  However, the conventional cap has room for improvement in reducing the number of parts and reducing the cost.

  The present invention has been made in consideration of such circumstances, and provides a cap capable of reducing the cost while suppressing the content from leaking out of the communication hole when the container body is tilted. The purpose is to do.

In order to solve the above-described problems and achieve such an object, the cap of the present invention is a cap provided with a communication hole formed in the container body and having a valve body for opening and closing the communication hole. The outer peripheral edge of the valve body and the inner peripheral edge of the communication hole are connected via an elastic hinge part, and the elastic hinge part elastically deforms, whereby the valve body opens and closes the communication hole, and the valve Of the outer peripheral edge of the body, a portion excluding the connecting portion with the elastic hinge portion is connected to the inner peripheral edge of the communication hole via a first weakening portion that can be broken over the entire area , and the valve body is connected to the communication hole. A valve main body located at the radial center of the hole, and an elastic connecting piece extending in the circumferential direction and having one end connected to the outer peripheral edge of the valve main body and the other end connected to the elastic hinge part. A radial direction out of the outer edges of the elastic connecting piece An outer edge is connected to the inner peripheral edge of the communication hole via the first weakened portion, and a radially inner edge is connected to the valve main body via a breakable second weakened portion. It is connected with the outer periphery of No ..

According to the present invention, the outer peripheral edge of the valve body and the inner peripheral edge of the communication hole are connected via the first weakening part over the entire area except the connection part with the elastic hinge part. After the fracture, the outer peripheral edge of the valve body, for example, rests on the burr part formed when the first weakened part is broken, or is caught by the burr part, and the container body of the valve body with respect to the communication hole While the movement toward the outside of the container is allowed, the movement toward the inside of the container body can be suppressed and can function as a check valve. This allows the valve body to function as a check valve without providing a valve seat on the cap body that supports the lower surface of the container body, and reduces the number of parts and costs. Can be achieved.
In addition, since the outer peripheral edge of the valve body rests on the burr part as described above after the first weakened portion is broken, a radial gap is formed between the valve body and the communication hole. It is possible to prevent the contents from leaking from the communication hole even if the container body is tilted after the first weakened portion is broken.

Moreover , since not only the first weakened part but also the second weakened part is provided, it becomes possible to form a large number of burr parts on which the valve body is placed or caught after opening, and the valve body is used as a check valve. Both functioning and suppressing unexpected leakage of contents can be reliably realized.

  According to the present invention, it is possible to reduce the cost while suppressing the leakage of the contents from the communication hole to the outside when the container body is tilted.

It is a longitudinal cross-sectional view of the cap shown as one Embodiment which concerns on this invention. It is a top view which shows the principal part of the cap of FIG. It is a top view which shows the principal part of the cap shown as other embodiment which concerns on this invention.

Hereinafter, a cap 1 according to an embodiment of the present invention will be described with reference to the drawings.
As shown in FIGS. 1 and 2, the cap 1 of the present embodiment is attached to the mouth portion of the container main body W and has a cap main body 12 in which a discharge hole 11 for contents is formed. A communication hole 13 that communicates with the discharge hole 11 is formed, and an inner plug member 15 provided with a valve body 14 that opens and closes the communication hole 13 and a lid body 16 that opens and closes the discharge hole 11 are provided. .

The cap body 12 is formed in a top tube shape, and a discharge cylinder 22 is formed on the top wall portion 21 thereof so that the inside communicates with the container body W and protrudes upward. The upper end opening of the discharge cylinder 22 is the discharge hole 11. The top wall 21 is disposed on the upper end opening edge of the mouth of the container body W. An internal thread portion that is screwed into the mouth portion of the container body W is formed in the peripheral wall portion 23 of the cap body 12.
The lid body 16 is connected to the cap body 12 via a hinge portion 24, and the discharge hole 11 is opened and closed by rotating the lid body 16 up and down around the hinge portion 24 with respect to the cap body 12. . The lid body 16 is formed with a seal cylinder 16 a that protrudes downward and is detachably fitted into the discharge hole 11. Note that the lid body 16 covers the entire top surface of the top wall portion 21 of the cap body 12.

The inner plug member 15 includes a mounting cylinder portion 31 that is fitted in the discharge cylinder 22 of the cap body 12 and has the communication hole 13 on the inside, and the valve body 14. And the inner peripheral edge of the communication hole 13 are connected via an elastic hinge portion 32, and the elastic hinge portion 32 is elastically deformed, whereby the valve body 14 opens and closes the communication hole 13.
Hereinafter, in plan view of the communication hole 13, a direction orthogonal to the axis O extending through the center and extending in the vertical direction is referred to as a radial direction, and a direction rotating around the axis O is referred to as a circumferential direction.
And in this embodiment, the part except the connection part with the elastic hinge part 32 among the outer periphery of the valve body 14 is set in the inner periphery of the communicating hole 13 via the 1st weakening part 33 which can be fractured over the whole region. It is connected.
In the illustrated example, a plurality of elastic hinge portions 32 are arranged at intervals in the circumferential direction, and a plurality of first weakening portions 33 are arranged in the circumferential direction via the elastic hinge portions 32. It has become.

  The valve body 14 has a valve main body 34 positioned at the radial center in the communication hole 13, extends in the circumferential direction, one end 35 a is connected to the outer peripheral edge of the valve main body 34, and the other end 35 b is an elastic hinge portion 32. And an elastic coupling piece 35 coupled to each other. Of the outer edges of the elastic connecting piece 35, the end edge 35 c facing outward in the radial direction is connected to the inner peripheral edge of the communication hole 13 via the first weakening portion 33, and the end edge 35 d facing inward in the radial direction. However, it is connected to the outer peripheral edge of the valve main body 34 via the second weakening portion 36 that can be broken.

Further, the second weakening portion 36 is connected over the entire area of the outer peripheral edge of the valve body 34 except for the connection portion with the one end 35 a of the elastic connecting piece 35.
Here, a plurality of elastic connecting pieces 35 are arranged at intervals in the circumferential direction, and a plurality of second weakening portions 36 are arranged in the circumferential direction via one end 35 a of the elastic connecting piece 35. It has a configuration.
And each 1st weakening part 33 and the 2nd weakening part 36 are mutually opposed in the radial direction via the elastic connection piece 35 in top view as FIG. 2 shows.
Hereinafter, in the top view, in the circumferential direction, the direction in which the elastic connecting piece 35 is directed from the other end 35b side to the one end 35a side is referred to as one side, and the opposite is referred to as the other side.

  Adjacent to the other side in the circumferential direction with respect to the other peripheral end edge 36a of the second weakened portion 36 and the first weakened portion 33 opposed to the second weakened portion 36 with the elastic connecting piece 35 sandwiched in the radial direction. The peripheral edge 33a on one side of the other first weakening portion 33 is connected via a third weakening portion 37 that can be broken. The third weakening portion 37 gradually extends from the inner side to the outer side in the radial direction as it goes from one side in the circumferential direction to the other side. The third weakening portion 37 includes the other end 35b of the elastic connecting piece 35 and the elastic hinge portion 32, and one end of the elastic connecting piece 35 adjacent to the other side in the circumferential direction. 35a.

The communication hole 13 is sealed by the valve body 14, the first weakening portion 33, the second weakening portion 36, and the third weakening portion 37.
Further, the first weakening portion 33, the second weakening portion 36, and the third weakening portion 37 are gradually viewed from the top to the bottom as shown in FIG. 1 in a longitudinal sectional view orthogonal to the extending direction. The groove has a V-shape with a narrow width.
The first weakening portion 33, the second weakening portion 36, and the third weakening portion 37 push up the valve body 14 from below to attach the valve body 14 before the inner plug member 15 is attached to the cap body 12. It breaks by raising with respect to the mounting cylinder part 31.

As described above, according to the cap 1 according to the present embodiment, the first weakening portion 33 is formed over the entire area except for the connection portion between the outer peripheral edge of the valve body 14 and the communication hole 13 and the elastic hinge portion 32. After the first weakened portion 33 is broken, the outer peripheral edge portion of the valve body 14 is placed on, for example, a burr portion formed when the first weakened portion 33 is broken. The movement of the valve body 14 toward the outside of the container body W with respect to the communication hole 13 is allowed, while the movement of the valve body 14 toward the inside of the container body W can be suppressed. It can function as a stop valve. This makes it possible to cause the valve body 14 to function as a check valve without providing the cap 1 with a valve seat that supports the lower surface of the valve body 14 on the container body W side, thereby reducing the number of parts. Cost reduction can be achieved.
In addition, since the outer peripheral edge of the valve body 14 rests on the burr portion as described above after the first weakened portion 33 is broken, a radial gap is formed between the valve body 14 and the communication hole 13. It is possible to prevent the contents from leaking out from the communication hole 13 even if the container body W is tilted after the first weakened portion 33 is broken.

Furthermore, since not only the 1st weakening part 33 but the 2nd weakening part 36 is also provided, it becomes possible to form many burr | flash parts on which the valve body 14 is mounted or caught after opening, and the valve body 14 is formed. Both functioning as a check valve and suppressing unexpected leakage of the contents can be reliably realized.
Further, when the first weakened portion 33, the second weakened portion 36, and the third weakened portion 37 are broken, the valve body 14 becomes a so-called three-point valve including the valve main body 34 and the plurality of elastic connecting pieces 35. The contents in the container body W pass through the communication hole 13 with the valve body 14 covering the upper part of the communication hole 13. Therefore, even if the content in the container main body W is a low-viscosity liquid, the momentum of the flow of the content toward the discharge holes 11 can be moderately suppressed.

  The present invention is not limited to the above-described embodiment, and can be changed as appropriate without departing from the spirit of the present invention.

For example, in the said embodiment, although the structure by which the elastic hinge part 32 and the elastic connection piece 35 were arrange | positioned 2 each was shown, you may arrange | position one by one.
Moreover, in the said embodiment, the 3rd weakening part 37 does not need to be formed.
Moreover, in the said embodiment, although the valve body 14 was provided with the valve main body 34 and the elastic connection piece 35, and the 2nd weakening part 36 and the 3rd weakening part 37 were formed, for example, FIG. As shown, the valve body 14 includes only the valve main body 34, the second weakened portion 36 and the third weakened portion 37 are not formed, and a part of the outer peripheral edge of the valve main body 34 is one. Even if the structure connected with the inner periphery of the communicating hole 13 via the elastic hinge part 32 is connected with the inner periphery of the communicating hole 13 through the 1st weakening part 33 which can be fractured | ruptured all the rest. Good.
Also in this structure, there exists an effect similar to embodiment shown in FIG.1 and FIG.2. Further, in the configuration shown in FIG. 3, when the valve body 14 is rotated upward around the elastic hinge portion 32, the communication hole 13 can be easily opened widely, for example, high-viscosity content or solid matter is mixed. Even if it is the made content, it can let the communicating hole 13 pass easily from the inside of the container main body W.
Further, the cap body 12 and the inner plug member 15 may be integrally formed.
Further, the timing at which the first weakened portion 33 and the like are broken by applying a force from the inside to the outside of the container main body W to the valve body 14 is not limited to the above embodiment, and may be changed as appropriate.
For example, it may be before the mold is opened in the mold for molding the inner stopper member 15, or after the inner stopper member 15 is attached to the cap body 12 and before the cap 1 is attached to the container body W. Also good. Further, it may be after the container body W is filled with the contents and the cap 1 is attached. In this case, you may fracture | rupture the 1st weakening part 33 grade | etc., By raising the internal pressure by elastically deforming the container main body W etc.

  In addition, it is possible to appropriately replace the constituent elements in the above-described embodiments with well-known constituent elements without departing from the spirit of the present invention, and the above-described modified examples may be appropriately combined.

DESCRIPTION OF SYMBOLS 1 Cap 13 Communication hole 14 Valve body 32 Elastic hinge part 33 1st weakening part 34 Valve main body 35 Elastic connection piece 35a One end 35b Other end 35c, 35d End edge 36 2nd weakening part W Container main body

Claims (1)

A communication hole is formed in the container body, and a cap including a valve body that opens and closes the communication hole,
An outer peripheral edge of the valve body and an inner peripheral edge of the communication hole are connected via an elastic hinge portion, and the elastic hinge portion is elastically deformed so that the valve body opens and closes the communication hole.
Of the outer peripheral edge of the valve body, the portion excluding the connection portion with the elastic hinge portion is connected to the inner peripheral edge of the communication hole via a first weakening portion that can be broken across the entire area ,
The valve body is
A valve body located in the radial center of the communication hole;
An elastic connecting piece extending in the circumferential direction, having one end connected to the outer periphery of the valve body and the other end connected to the elastic hinge part,
Outer edge of the elastic connecting piece is connected to the inner peripheral edge of the communication hole via the first weakening portion, and the edge facing the inner side in the radial direction can be broken. A cap that is connected to the outer peripheral edge of the valve body via a second weakening portion .

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